Table 3.

Influence of pregnancy on recurrence of cutaneous malignant melanoma in women.

Study	Population (n)	Effect		Precision
		χ 2(*)	RR	P-value	95% CI
Reintgen et al. [9]	43 patients	0.04 univariate	—	.80 univariate	—
	585 controls	0.0 multivariate	—	1.00 multivariate	—
MacKie et al. [10]	85 patients	—	1.21 (**)	.66	0.52–2.79
	143 controls	—	0.71 (**)	.54	0.23–2.15

(*) With χ ², the chi-square test is pronounced, which was used to test the significance of differences between the patient and the control groups. A concomitant P-value >  .05 means that a correlation between pregnancy and CMM recurrence is not likely, and that if there is a correlation at all, this is not very strong, as suggested by the small χ ² -values of 0.04 and 0.0 in the univariate and multivariate analyses, respectively.

(**) Compared to women diagnosed with a CMM in between pregnancies.